When attempting to STREAM SugarMegs files via Firefox:

Every time Firefox updates, and it updates often, it makes SugarMegs stream via the browser itself rather than in the Windows media player thus NO LONGER DISPLAYING setlist information.

To fix this do as follows in Firefox:

Tools:
AddOns:
Then 'DISABLE' the entry that says "Microsoft Windows Media Player Firefox Plugin"

When the browser itself is used you will not see any setlist information, however when you allow the Windows Media player to handle the streaming you will see setlist information (and pictures if any) in the Windows Media player's 'video' window.